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X线对比剂的引入方法

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Genetically modified foods (GM foods), also known as genetically engineered foods (GE foods), or bioengineered foods are foods produced from organisms that have had changes introduced into their ________ using the methods of genetic engineering.

A. RNA
B. DNA
C. Protein
D. Chromosome

Herbert W. Boyer and Stanley Cohen created the first genetically modified organism (E. coli) in ______.

A. 1965
B. 1970
C. 1973
D. 1976

In ______, Rudolf Jaenisch of MIT created the first GM animal (mice).

A. 1968
B. 1972
C. 1974
D. 1978

Humans have domesticated plants and animals since around ________ BCE.

A. 18,000
B. 15,000
C. 12,000
D. 10,000